DE2423639C3 - Verfahren zur Herstellung von Di-(4-aminocyclohexyl)-methan durch katalytische Hydrierung von Di-(4-aminophenyD-methan - Google Patents
Verfahren zur Herstellung von Di-(4-aminocyclohexyl)-methan durch katalytische Hydrierung von Di-(4-aminophenyD-methanInfo
- Publication number
- DE2423639C3 DE2423639C3 DE2423639A DE2423639A DE2423639C3 DE 2423639 C3 DE2423639 C3 DE 2423639C3 DE 2423639 A DE2423639 A DE 2423639A DE 2423639 A DE2423639 A DE 2423639A DE 2423639 C3 DE2423639 C3 DE 2423639C3
- Authority
- DE
- Germany
- Prior art keywords
- methane
- catalyst
- regeneration
- hydrogenation
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims description 46
- DZIHTWJGPDVSGE-UHFFFAOYSA-N 4-[(4-aminocyclohexyl)methyl]cyclohexan-1-amine Chemical compound C1CC(N)CCC1CC1CCC(N)CC1 DZIHTWJGPDVSGE-UHFFFAOYSA-N 0.000 title claims description 23
- 238000009903 catalytic hydrogenation reaction Methods 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title description 3
- 239000003054 catalyst Substances 0.000 claims description 87
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 63
- 238000011069 regeneration method Methods 0.000 claims description 54
- 230000008929 regeneration Effects 0.000 claims description 52
- 229910052703 rhodium Inorganic materials 0.000 claims description 38
- 239000010948 rhodium Substances 0.000 claims description 38
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 37
- 229910021529 ammonia Inorganic materials 0.000 claims description 31
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 24
- 239000001257 hydrogen Substances 0.000 claims description 24
- 229910052739 hydrogen Inorganic materials 0.000 claims description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 23
- 239000001301 oxygen Substances 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 11
- 239000012298 atmosphere Substances 0.000 claims description 10
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- 238000005984 hydrogenation reaction Methods 0.000 description 47
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 28
- 238000006243 chemical reaction Methods 0.000 description 16
- 238000002474 experimental method Methods 0.000 description 15
- 150000004985 diamines Chemical class 0.000 description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 9
- 230000007420 reactivation Effects 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 238000006722 reduction reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 239000012458 free base Substances 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- MSXVEPNJUHWQHW-UHFFFAOYSA-N 2-methylbutan-2-ol Chemical compound CCC(C)(C)O MSXVEPNJUHWQHW-UHFFFAOYSA-N 0.000 description 3
- NRVOGWCXEOJNFS-UHFFFAOYSA-N 4-[(4-aminocyclohexyl)methyl]aniline Chemical compound C1CC(N)CCC1CC1=CC=C(N)C=C1 NRVOGWCXEOJNFS-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- -1 Platinum Metals Chemical class 0.000 description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- AQIXEPGDORPWBJ-UHFFFAOYSA-N pentan-3-ol Chemical compound CCC(O)CC AQIXEPGDORPWBJ-UHFFFAOYSA-N 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 229910052707 ruthenium Inorganic materials 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- BBMCTIGTTCKYKF-UHFFFAOYSA-N 1-heptanol Chemical compound CCCCCCCO BBMCTIGTTCKYKF-UHFFFAOYSA-N 0.000 description 2
- MXLMTQWGSQIYOW-UHFFFAOYSA-N 3-methyl-2-butanol Chemical compound CC(C)C(C)O MXLMTQWGSQIYOW-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- UKJLNMAFNRKWGR-UHFFFAOYSA-N cyclohexatrienamine Chemical group NC1=CC=C=C[CH]1 UKJLNMAFNRKWGR-UHFFFAOYSA-N 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- KHGSIITYVUGTTQ-UHFFFAOYSA-N methane;toluene Chemical compound C.CC1=CC=CC=C1 KHGSIITYVUGTTQ-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- JYVLIDXNZAXMDK-UHFFFAOYSA-N 2-pentanol Substances CCCC(C)O JYVLIDXNZAXMDK-UHFFFAOYSA-N 0.000 description 1
- FRDAATYAJDYRNW-UHFFFAOYSA-N 3-methyl-3-pentanol Chemical compound CCC(C)(O)CC FRDAATYAJDYRNW-UHFFFAOYSA-N 0.000 description 1
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003822 preparative gas chromatography Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/68—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
- C07C209/70—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton by reduction of unsaturated amines
- C07C209/72—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton by reduction of unsaturated amines by reduction of six-membered aromatic rings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00373094A US3856862A (en) | 1973-06-25 | 1973-06-25 | Process for hydrogenation of di(4-aminophenyl)methane with a rhodium catalyst |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2423639A1 DE2423639A1 (de) | 1975-01-16 |
DE2423639B2 DE2423639B2 (de) | 1978-06-01 |
DE2423639C3 true DE2423639C3 (de) | 1979-02-08 |
Family
ID=23470916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2423639A Expired DE2423639C3 (de) | 1973-06-25 | 1974-05-15 | Verfahren zur Herstellung von Di-(4-aminocyclohexyl)-methan durch katalytische Hydrierung von Di-(4-aminophenyD-methan |
Country Status (5)
Country | Link |
---|---|
US (1) | US3856862A (enrdf_load_stackoverflow) |
JP (1) | JPS5221504B2 (enrdf_load_stackoverflow) |
DE (1) | DE2423639C3 (enrdf_load_stackoverflow) |
GB (1) | GB1415637A (enrdf_load_stackoverflow) |
NL (1) | NL167152C (enrdf_load_stackoverflow) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4020104A (en) * | 1976-09-20 | 1977-04-26 | The Upjohn Company | Process for isomerizing cis,cis- and cis,trans-isomers of di-(p-aminocyclohexyl)methane to the corresponding trans,trans-isomer |
JPS5616455A (en) * | 1979-07-20 | 1981-02-17 | Mitsui Toatsu Chem Inc | Preparation of alicyclic isocyanate |
CA1204785A (en) * | 1981-06-01 | 1986-05-20 | Gary F. Allen | Process for the catalytic hydrogenation of di (4- aminophenyl) methane |
US4394523A (en) * | 1981-06-01 | 1983-07-19 | Mobay Chemical Corporation | Catalytic hydrogenation of di (4-aminophenyl) methane |
US4754070A (en) * | 1986-01-23 | 1988-06-28 | Air Products And Chemicals, Inc. | Hydrogenation of methylenedianiline to produce bis(para-aminocyclohexyl)methane |
US5196587A (en) * | 1988-03-30 | 1993-03-23 | Air Products And Chemicals, Inc. | Catalytic hydrogenation of crude methylene bridged polyphenylamines to produce polycyclohexylamines |
US4960941A (en) * | 1988-03-30 | 1990-10-02 | Air Products And Chemicals, Inc. | Hydrogenation of aromatic amines to produce their ring hydrogenated counterparts |
US5026914A (en) * | 1989-04-11 | 1991-06-25 | Air Products And Chemicals, Inc. | Hydrogenation of aromatic amines using rhodium on titania or zirconia support |
US5214212A (en) * | 1992-02-27 | 1993-05-25 | Olin Corporation | Promoters for hydrogenation of aromatic amines |
US5550294A (en) * | 1992-02-05 | 1996-08-27 | Olin Corporation | Method of increasing hydrogenation rate of aromatic amines |
DE4328007A1 (de) * | 1993-08-20 | 1995-02-23 | Huels Chemische Werke Ag | Katalysator zur Herstellung von Bis-Para-aminocyclohexylmethan mit niedrigem Anteil an trans-trans-Isomer durch Hydrierung von Methylendiamin |
US5973207A (en) * | 1993-09-27 | 1999-10-26 | Air Products And Chemicals, Inc. | Hydrogenation of meta-toluenediamine |
US5545756A (en) * | 1994-09-14 | 1996-08-13 | Air Products And Chemicals, Inc. | Hydrogenation of aromatic amines using mixed metal oxide support |
KR100256431B1 (ko) * | 1997-10-07 | 2000-05-15 | 박호군 | 방향족 디아민의 고리 수소화 방법 |
US6942706B2 (en) | 2002-08-20 | 2005-09-13 | Invista North America S.A.R.L. | Vat acid dyeing of textile fibers |
US6998507B1 (en) | 2004-08-24 | 2006-02-14 | Air Products And Chemicals, Inc. | Hydrogenation of methylenedianiline |
EP1824810B1 (en) * | 2004-12-16 | 2013-03-27 | Huntsman Petrochemical LLC | Co-production of cyclohexylamine and bis-(para-aminocyclohexyl)-methane |
DE102004061608A1 (de) * | 2004-12-17 | 2006-07-06 | Basf Ag | Verfahren zur Herstellung von 1,2-Diamino-3-methylcyclohexan und/oder 1,2-Diamino-4-methylcyclohexan |
CN103265438B (zh) | 2013-05-22 | 2014-11-05 | 万华化学集团股份有限公司 | 二氨基二环己基甲烷的制备方法 |
TWI534131B (zh) | 2014-11-27 | 2016-05-21 | 財團法人工業技術研究院 | 氫化4,4’-二胺基二苯甲烷的觸媒與方法 |
CN108440311B (zh) * | 2018-03-29 | 2020-11-20 | 万华化学集团股份有限公司 | 一种加氢制备二氨基二环己基甲烷的方法 |
CN110204447B (zh) * | 2019-05-31 | 2022-04-22 | 万华化学集团股份有限公司 | 一种4,4’-二氨基二环己基甲烷连续化生产过程中催化剂的再生方法 |
CN113893866B (zh) * | 2021-11-08 | 2023-03-03 | 万华化学集团股份有限公司 | 一种h12mda生产过程中催化剂的再生方法和h12mda的生产方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3347917A (en) * | 1961-12-29 | 1967-10-17 | Du Pont | Process for the preparation of di (paraaminocyclohexyl) methane |
US3196179A (en) * | 1962-03-26 | 1965-07-20 | Abbott Lab | Preparation of cyclohexylamine by hydrogenation of aniline using a rhodium catalyst |
US3194839A (en) * | 1962-04-12 | 1965-07-13 | Abbott Lab | Catalytic hydrogenation of nitroaromatic compounds to aromatic amines |
US3591635A (en) * | 1968-09-25 | 1971-07-06 | Upjohn Co | Catalytic hydrogenation process for preparing di(4 - aminocyclohexyl) methane |
-
1973
- 1973-06-25 US US00373094A patent/US3856862A/en not_active Expired - Lifetime
-
1974
- 1974-05-15 DE DE2423639A patent/DE2423639C3/de not_active Expired
- 1974-05-15 GB GB2156874A patent/GB1415637A/en not_active Expired
- 1974-05-30 NL NL7407295.A patent/NL167152C/xx not_active IP Right Cessation
- 1974-06-19 JP JP49070055A patent/JPS5221504B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3856862A (en) | 1974-12-24 |
DE2423639B2 (de) | 1978-06-01 |
GB1415637A (en) | 1975-11-26 |
NL167152B (nl) | 1981-06-16 |
NL7407295A (enrdf_load_stackoverflow) | 1974-12-30 |
DE2423639A1 (de) | 1975-01-16 |
NL167152C (nl) | 1981-11-16 |
JPS5036447A (enrdf_load_stackoverflow) | 1975-04-05 |
JPS5221504B2 (enrdf_load_stackoverflow) | 1977-06-10 |
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